Gas-generator.



I I. A, OHAVANNE.

GAS GENERATOR. APPLIOATI'ON FILED APR. 17,

Patented Aug. 10, 1909.

ANDREW. a. Gamma cm PNOTU-LITHOGMPNERS. wAsmNflYcN. u c.

.5 mass, the said steps may into the mechanismfor driving the cone.

tating about the twyertub'e c UNTTSED STATES @FFTQE.

Specification of Letters Yatent. Application filed April 17,1908.

No. 930,532. l atented Aug. 10, 1909.

Serial No. 427,765,

portion of the cone or is supported by rolls which are provided withaxles e turning in fixed bearings, and the upper portion by means ofballs 7" rolling upon a track fast with the twyer tube 0 which forms theaxis of the whole system. Thus as above stated the conical .form of thegrate a and the inclination of the thread or steps b may vary as desiredand they may moreover in each case vary from one point of the cone tothe other. In certain cases, especially when the cone a is relativelyflat, the central series of carrying balls or rollers f may be omitted.

The apex of the cone a is formed of the cap 9 of the twyer which is alsoconical and formed with helicoidal steps h. Blowing orifices z areprovided at the lower portion of the cap, which in their rotationdistribute the air and steam uniformly throughout the T 0 all whom itmay concern:

Be it known that I, Innumi ALEXIS CHA- VANNE, of St. Chamond, Loire,France, engineer, have invented a new and useful ha .5 provement in GasGenerators, which improvement is fully set forth in the followingspecification.

This invention able grate for .gas

has for its object a movgenerators the continuous rotation of which at asuitable speed automatically maintains the zone of combustion at thedesired height. For this purpose the movable grate is provided withspiral steps screwing so to speak into the combustible be arranged inone or more helices; the general form of the grate is that of a coneturning about its aXis which preferably coincides with that of the pipeleading air and steam to the midst of the combustible, and provided atits apex combustible mass. The cap 9 may be fixed with a blowing capwhich may be fixed or but this is usually not advisable.

rotating and provided with one or more The lower portion of the cone ais proopenings. The conical form of the grate as vided with teeth j,which may be cast with well as that of the inclination ofthe steps it,withwhich gear a bevel pinion 7a keyed with which it is provided shouldbe deterupon a driving shaft Z, the shaft Z is driven mined by takinginto consideration the na in any suitable manner which permits of tureand the size of the combustible fuelas stopping or reversing whendesired the diwell as that of the movement which it is derection ofrotation. sired to impart to the various portions of the The movablegrate or cone 64 almost enmass. In effect, when the angle of the apextirely fills the lower'end of the gas generof the cone is too acute, thecentral portions ator, so as to efiiciently expel the burned of thecombustible mass pass downward too portions of the charge at the sides;it is conrapidly, the peripheral portions remaining nected through itshave with a floor an of behind. The contrarytakes place when themasonry, for example, formed as a basin and cone is too fiat, and asuitable angle for the filled with water into which an annular plateconical bottom and for the steps is one which n .dips ;thisplate formsthe lower portion of gives a uniform descent of the combustible the bodyof a gas generator of any suitable mass at all points of the gasgenerator. The construction. .movable stepped grate almost entirelyfills As will be seen in the drawings the lower the lower end of the gasgenerator an is edge of the wall a which may be cylindrical or conicalis preferably in a line with the outer edge of the cone (1. This plate nforms a water seal while leavingbetween its lower edge and the floor m aspace sufficient for the removal of the cinders and slag.

In order to-prevent the cinders and other impurities passing into thedriving mechanism of the movable grate a and consequently hindering itsmovement, there is arranged at the lower portion of the basin m a ring 0of fiber, wood or other suitable ma terial rubbing upon the periphery ofthe cone a and retained by a metal washer p and tightening plate g, Itis not necessary that this stuffing box 0 should prevent the passage ofwater contained in the trough m, which connected at its base with anordinary form of trough formin-ga water seal, preferably with theinterposition of a suitable stufiing box for preventing cinders frompassing In the accompanying illustrative drawings: Figure 1 is a partialvertical section of the lower end of a gas generator, provided with themovable bottom which forms the subject of the present invention. Fig. 2is an elevation'of this grate, and Fig. 3 is a plan of the same.

In these figures a is the conical movable grate provided with spiralsteps b and rothrough which the incoming air and steam pass. The lowertatable cone having a erator, a twyer arranged may even, especially ifcare be taken to add a little soap or other lubricant, serve tolubricate the driving parts of the cone a. An ordinary stufiing box 1*is in this upon the shaft Z at the place where it emerges from theapparatus.

The apparatus works as follows: As the movable grate a supports the massof the fuel decomposed tion in the gas generator, it results that in itsmovement of rotation, the spiral Z) which forms a support in the form ofascrew hav ing one or more threads allows the mass to move downward in aregular manner; the

the trough m being pushed outward. charge should bind and adheretogether it can easily be separated and to a certain extent broken up,by reversing for a short time the direction of rotation of the steppedcone so as to produce a lifting of the mass.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed I declare thatwhat I claim is:

1. The combination, with the body of a gas generator, of a grate formedas a rospirally stepped surits base substantially in the 2. Thecombination, with the body of a gas generator, of a grate formed as ar0- tatable cone having a spirally stepped sur face and with its basesubstantially. in the he generator, and a twyer arranged axially, of thecone and discharging radially near the upper extremity thereof.

3.1The combination, with the body of a gas generator, of tatable coneopenings.

4. The combination, with the body portion of a gas generator, of a grateformed as a cone having a spirally stepped surface and having its basesubstantially in the same horizontal plane with the floor of thegenaxially of the cone, the cone divided into two portions alon ahorizontal plane, the lower portion rotata ly to rotate the lowerport'on of the cone.

5. The combination, with the body porgas generator,

erator, a twyer arranged axially of the cone, the cone divided into twoportions alon a horizontal plane, the lower portion rotatably mounted,and the upper portion capping the central twyer therefor with dischargeopenings, means to rotate the lower portion of the cone, the floorformed as a basin for water, and the around the cone into the basin.

6. The combination, with the body portion of a gas generator, of a grateformed as a cone having a spirally stepped surface and having its basesubstantially in the same horizontal plane with the floor of thegenerator, a twyer arranged axially of the cone, the cone divided intotwo portions alon a horizontal plane, the lower portion rotatablymounted, and the upper portion capping the central twyer andconstituting a nozzle therefor with discharge openings, means to rotatethe lower portion of the cone, the floor formed as a basin for water,and the wall of the generator extending downwardly around the cone intothe basin and terminating substantially in line vertically with theperiphery of the cone base.

7. Tie combination, with the body of a generator, of a grate formed as arotatable cone having a face and with its base substantially in the samehorizontal plane as the adjacent floor of the generator, the floorformed as a basin for water and with an annular recess concentric withthe cone, rolls traveling in the recess and supporting the cone, andmeansto rotate the cone.

8. The combination, with the body of a gas generator, of a grate formedas a rotatable cone having a spirally stepped surface and with its basesubstantially in'the same horizontal plane as the adjacent floor of thegenerator, the floor formed as a basin for water and with an annularrecess concentric with the cone, rolls traveling in the recess andsupporting the cone and arranged within a chamber in communication withthe basin and adapted to be flooded by the water therein, and means torotate the cone.

wall of the generator extending downwardly 9. The combination, with thebody of a gas generator, of a grate formed as a rotatable cone having aspirally stepped surface and with its base substantially in the samehorizontal plane as the adjacent floor of the generator, and a twyerarranged axially of the cone and terminating in a cap forming the apexof the cone and provided with radial openings, the twyer provided in itsupper portion with a flange having an annular recess therein and thecone having an interior annular recess overlying that in the flange andthe two recesses together forming a race-way, anti-friction balls in theraceway and supporting the cone, and means to rotate the cone.

spirally stepped sur- I and constituting a nozzle I 10. The combination,with the body portion of'a gas generator, of a grate formed as a conehaving a spirally stepped surface and having its base substantially inthe same horizontal plane with the floor of the generator, a twyerarranged axially of the cone, the cone diviled into two portions along ahorizontal plane, the lower tably mounted, and the upper portion cappingthe central twyer and constituting a nozzle therefor with dischargeopenings, the twy-er provided in its upper portion with a flange havingan annular recess therein and the movable portion of the cone having aninterior annular recess overlying that in the flange and the tworecesses together "forming a race-way, antifriction balls in the racewayand supporting the cone, the floor formed as a basin for water and withan annular recess concentric with the cone, rolls traveling in therecess and cone, and means to rotate the cone.

11. The combination, with the body portion of a gas generator, of agrate formed as a cone having a spirally stepped surface and having itsbase substantially in the same horizontal plane with the floor of thegenerator, a twyer arranged axially of the cone,

the cone divided into two portions along a portion rota supporting thehorizontal plane, the lower portion rotatably mounted, and the upperportion capping the central twyer and constituting a nozzle thereforwith discharge openings, the floor formed as a basin for water, and thewall of the generator extending downwardly around the cone into thebasin and terminating substantially in line vertically with theperiphery of the cone base, the twyer provided in its upper portion witha flange having an annular recess therein and the cone having aninterior annular recess overlying that in the flange and the tworecesses together forming a raceway, anti-friction balls in the race-wayand supporting the cone, the floor formed as a basin for water and withan annular recess concentric with the cone, rolls traveling in tierecess and supporting the cone and arranged within a chamber incommunication with the basin and adapted to be flooded by the watertherein, and means to rotate the cone.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

. IRENEE ALEXIS UHAVANNE.

Witnesses:

' J. NEUBY,

EDMOND A. BURRILL.

